38 



BIRDS OF EAST PENNSYLVANIA. 



Coimnon Oonnorant. . 

 Double-crested Cormorant, 



Wilson's Petrel. . . . 



Greater Shearwater. . 



Great Black-backed Gull. 

 Herring Gull 



Ring-billed Gull. . . 



Laughing Gull. . . . 



Bonaparte's GuU. . . 



Kittiwake Gull. . . . 



Marsh Tern 



Forster's Tern. . . . 



Eoseate Tern. . . . 



Phalacrocorax carho. Rather rare 

 on the Jersey coast. (W.) 



. Phalacrocorax dilophus. Rare; 

 many, however, pass along the coast 

 to "Winter further south. (W.) 



Thalassidroma Wilsonii. Very rare. 

 It is generally met with off the coast 

 in Autumn and Winter. (W.) 



Fatfiniis major. Very rare. A few 

 are seen every year on the Atlantic, 

 off the coast. (W.) 



Larus marinus. Saddle Back Gull. 

 Not uncommon. (W.) 



Larus argentatus. Grey Winteb 

 Gull. Silveky Gull. Plen- 

 tiful (W.) 



Larus Delaioarensis. CosiMON GuLL. 

 BROAra Winter Gull. Abundant 

 This species is not unlike Larus 

 can us of Europe. (W.) 



Larus atricilla. Black - headed 

 Gull. Common, arriving in the 

 end of April. (S.) 



Larus Philadelphicus. Lesser 



Black-headed Gull. Not un- 

 common. (W.) 



Larus tridactylus. Rather rare along 

 the New Jersey coast. (W.) 



Sterna anglica. GuLL-BLLLED Teen. 

 Rare. (S.) 



Sterna Forsteri. Rare. I have found 

 this species breeding on Brigantiue 

 Beach. The adult, in Winter 

 plumage, has been called Havell's 

 Tern. (S.) 



Sterna Dougallii. This elegant Tern 

 is not uncommon. It is doubtful if it 

 is increasing in Scotland, where the 

 species was originally discovered. (S.) 



